Show that jsinh.\I.::: jcosh::I.::: coshx by using (a)
Chapter 0, Problem 3.67(choose chapter or problem)
Show that jsinh.\I.::: jcosh::I.::: coshx by using (a) identity (12). Sec. 39: (/J) the inequalities lsi nh .rl ::,: jcos:: I ::: cosh y. obt;,1ined in Exercise 9(/J). Sec. 38.
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